Home / 62,541.12-93,821.28-20,978.40

Finding the Fourth Proportional to 62,541.12, 93,821.28 and 20,978.40

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Solution

The fourth proportional to 62,541.12, 93,821.28 and 20,978.40 is: 31,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,541.12 : 93,821.28 = 20,978.40 : x
  2. Step 2: Convert to fraction form
    62,541.12/93,821.28 = 20,978.40/x
  3. Step 3: Cross multiply
    62,541.12x = 93,821.28 × 20,978.40
  4. Step 4: Simplify right side
    62,541.12x = 1,968,220,340.35
  5. Step 5: Solve for x
    x = 1,968,220,340.35/62,541.12
  6. Step 6: Final answer
    x = 31,470.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.